Disk drive decreasing an adapting delay based on speed that a settle parameter adapts

Abstract

A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks, and control circuitry operable to seek the head to a target track and settle the head on the target track during a settle time, adapt a settle parameter over an adapting delay of the settle time, wherein the settle parameter is used to settle the head on the target track, and decrease the adapting delay based on a speed that the settle parameter adapts.

What is claimed is: 
     
       1. A disk drive comprising:
 a disk comprising a plurality of tracks; 
 a head actuated over the disk; and 
 control circuitry operable to: 
 (a) seek the head to a target track and settle the head on the target track during a settle time; 
 (b) adapt a settle parameter over an adapting delay of the settle time, wherein the settle parameter is used to settle the head on the target track; 
 (c) decrease the adapting delay based on a speed that the settle parameter adapts; and 
 (d) repeat (a) through (c) at least once. 
 
     
     
       2. The disk drive as recited in  claim 1 , wherein the control circuitry is further operable to:
 access the target track after an access delay of the settle time; and 
 decrease the access delay based on the speed that the settle parameter adapts. 
 
     
     
       3. The disk drive as recited in  claim 1 , wherein the control circuitry is further operable to initialize the adapting delay based on a peak in an adaptation profile of the settle parameter. 
     
     
       4. A method of operating a disk drive comprising a head actuated over a disk comprising a plurality of tracks, the method comprising:
 (a) seeking the head to a target track and settle the head on the target track during a settle time; 
 (b) adapting a settle parameter over an adapting delay of the settle time, wherein the settle parameter is used to settle the head on the target track; 
 (c) decreasing the adapting delay based on a speed that the settle parameter adapts; and 
 (d) repeating (a) through (c) at least once. 
 
     
     
       5. The method as recited in  claim 4 , further comprising:
 accessing the target track after an access delay of the settle time; and 
 decreasing the access delay based on the speed that the settle parameter adapts. 
 
     
     
       6. The method as recited in  claim 4 , further comprising initializing the adapting delay based on a peak in an adaptation profile of the settle parameter.